Homebrewed Electricity > Wind
gear box study
SparWeb:
I see.
Make sure to consider that with a 12.56:1 speed ratio, you also get a 1:12.56 torque ratio.
This means that the friction in the alternator bearings, and any other slight resistance, will be multiplied by 12.56 and preventing your turbine from starting.
You can counteract this with your variable-pitch blades, of course.
This is getting pretty complex.
mbouwer:
Thanks Sparweb,
The kind and the way of lubrication will also be important I think.
The main axis. With double walled composition I try to save weight.
Rainwulf:
You must use roller or needle bearings for your main axis. The wind puts a LOT of axial and rotation force on them. That's why the volvo 740 front ends are so popular. Made super tough.
mbouwer:
Found ball bearings 89-50 width 20 and 62-35 width 14 mm.
mbouwer:
The internal assembly in the gear wheel to fit on the main axis.
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